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Master Data Science step-by-step
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Module 3
Data Preprocessing and Feature Engineering
1
Simple Imputation for Missing Data
Handle missing values using simple imputation strategies (mean, median, mode).
2
Categorical Encoding: One-Hot vs. Label
Encode categorical variables using one-hot encoding and label encoding, explaining the trade-offs.
3
Feature Scaling: Standardization vs. Normalization
Apply feature scaling techniques (standardization and normalization) and explain when each is appropriate.
4
Outlier Handling Strategies
Apply common strategies for handling outliers identified during EDA (e.g., clipping, removal).
5
Feature Engineering: Creating New Features
Engineer new features from existing ones, including polynomial, interaction, and temporal features.
6
Building Reusable Preprocessing Pipelines
Build a reusable preprocessing pipeline using scikit-learn's Pipeline and ColumnTransformer.
Previous module
Exploratory Data Analysis in Practice
Next module
Fundamentals of Model Validation